Title :
Dual-Beam Steering Microstrip Leaky Wave Antenna With Fixed Operating Frequency
Author :
Li, Yuanxin ; Xue, Quan ; Yung, Edward Kai-Ning ; Long, Yunliang
Author_Institution :
City Univ. of Hong Kong, Hong Kong
Abstract :
A fixed-frequency dual-beam steering microstrip leaky-wave antenna is presented in this paper. A novel equation with finite-difference time-domain method is proposed to calculate the complex propagation constant of microstrip leaky-wave antenna. The microstrip leaky-wave antenna is excited by multiterminals. By control the novel feeding configuration, the microstrip leaky-wave antenna has the advantage of main lobe´s dual-beam and steering at fixed-frequency. The main lobe steers from 41 to 63 for right beam and from 117 to 139 for left beam symmetrically when operating frequency fixes at 7 GHz. This new microstrip leaky-wave antenna can easily be used as collision avoidance or automobile radar system.
Keywords :
antenna feeds; beam steering; finite difference time-domain analysis; leaky wave antennas; microstrip antennas; antenna feeds; automobile radar system; collision avoidance; complex propagation constant; dual-beam steering microstrip leaky wave antenna; finite-difference time-domain method; fixed operating frequency; frequency 7 GHz; Automobiles; Collision avoidance; Equations; Finite difference methods; Frequency; Leaky wave antennas; Microstrip antennas; Propagation constant; Radar antennas; Time domain analysis; Dual-beam; fixed-frequency; microstrip leaky-wave antenna (MLWA);
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2007.913168
